Home / 20,366.10-28,104.75-11,867.68

Finding the Fourth Proportional to 20,366.10, 28,104.75 and 11,867.68

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Solution

The fourth proportional to 20,366.10, 28,104.75 and 11,867.68 is: 16,377.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.10 : 28,104.75 = 11,867.68 : x
  2. Step 2: Convert to fraction form
    20,366.10/28,104.75 = 11,867.68/x
  3. Step 3: Cross multiply
    20,366.10x = 28,104.75 × 11,867.68
  4. Step 4: Simplify right side
    20,366.10x = 333,538,179.48
  5. Step 5: Solve for x
    x = 333,538,179.48/20,366.10
  6. Step 6: Final answer
    x = 16,377.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.